I’m looking to be able to share images via social media/email from the lightbox if possible, instead of the ability for someone to share a whole page. I’ve tried slingpic but they only seem to work on the gallery thumbnails. Any ideas? – even the ability to insert PHP or shortcode at the bottom of a lightbox image?

You can modify the prettyPhoto implementation in the js folder of the theme files and add hooks/javascript in as needed but I don’t have any experience with any plugins like that so your best route for getting integration would be to find a solid plugin with enough flexibility to let you direct it in its integration.

However, after making the necessary amendments and successfully getting ‘tweet’ and ‘like’ buttons to display on the slideshow, they only link to/share the portfolio page; so, I think I will leave this disabled as it’s not actually sharing a link to the picture being displayed to the user: it’s a bit misleading :-(